Raspberry Pi zero portable music playerDesigned by Bram, Ships from Netherlands
The PiPod is an open source portable music player based on the Raspberry Pi Zero with a 3D printed case. For more information visit the project page on Hackaday.IO Included PiPod board (either ass...Read More…
The PiPod is an open source portable music player based on the Raspberry Pi Zero with a 3D printed case. For more information visit the project page on Hackaday.IO
The display on this board has a resolution of 320 by 240 pixels with a screen diagonal of 2.2”. It is connected to the Raspberry Pi using the SPI bus.
This board includes the PCM5102A a 24-bit I2S DAC with a 3.5mm jack. This IC is used to generate high-quality audio without a hum.
On the board are controls for navigation, volume control, and backlight control. There is also a slide switch on top to select between the USB output (off position) and battery output (on position).
The battery is charged using the TP4056 charger with a charge rate of 1000 mA. It is also protected by the DW01 battery protection circuit, this IC protects against overcharge, over-discharge, and overcurrent.
Battery monitoring and charging detection are implemented using an ADS1015 ADC. The ADS1015 is a 12-bit ADC that is connected using I2C to the Raspberry Pi. Channel 0 is connected to the USB connection and channel 1 to the battery using a voltage divider, channels 3 and 4 are not being used but are broken out to two test pads next to the ADC.
The nominal voltage of 3.7v outputted by the battery is converted to a steady 5v output by the MT3608 step-up converter. The MT3608 include under-voltage lockout, current limiting, and thermal overload protection.
I made this music player because I wasn't satisfied with the current playback methods that are available. The music streaming services available started to feel like radio stations with the same music repeating, they are also depended on an online internet connection while there might be offline functionality it is still limited by the available storage on your phone.
Since most vinyl records come with a download code for MP3 files a dedicated portable music player with my own offline music collection seemed like a good option. Storage has become cheaper and cheaper in recent years so there should be a couple of music players with a lot of storage, right? Well, that's not the case, there are a couple of high-end players with enough storage, but these are a couple of hundred bucks. That's why I build the first version using parts I had laying around for a few bucks. Since then I've remade it a couple of times and I've finally come to a version that completely works.
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I like to create electronics and hack old hardware. And I want to experiment with everything I can.